Normal histology of lymphatic system
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histology of lymphatic system
This document summarizes the histology of the lymphatic system. It describes the main lymphoid organs as lymph nodes, spleen, thymus, and tonsils. Lymph nodes contain an outer cortex with lymphoid nodules and germinal centers, and an inner medulla with medullary cords and sinuses. The spleen has a capsule dividing it into white pulp with lymphoid nodules and red pulp with splenic cords and sinusoids. The thymus has a dark staining cortex containing immature lymphocytes and a light staining medulla with thymic corpuscles. Tonsils consist of lymphoid nodules in crypts, covered by stratified squ
Lymph node
Lymph nodes are oval structures that filter lymph and help the immune system fight infections. They contain a capsule that admits lymph through afferent vessels and releases it through efferent vessels. The lymph circulates through sinuses in the cortex and medulla before exiting. Lymph nodes vary in size and receive blood only at the hilum. They contain lymphatic tissue to combat pathogens by generating antibodies and immune cells that travel via efferent lymph vessels.
Lymphatic system
The lymphatic system consists of lymph vessels, lymph nodes, and lymphoid tissues that work together to drain excess fluid from tissues, absorb and transport fatty acids from the gut, and help fight infection. Lymph is formed when interstitial fluid drains into initial lymphatic vessels and circulates through a network of vessels, nodes, ducts, and eventually returns to the bloodstream. Lymph nodes filter lymph as it circulates and contain immune cells that help fight pathogens. The major lymphatic ducts are the thoracic duct and right lymphatic duct which drain lymph into the bloodstream in the neck.
ANATOMY OF THE LYMPHATIC SYSTEM
The lymphatic system consists of lymph, lymphatic vessels, lymphatic tissue, and lymphatic organs. Lymph is a clear fluid that transports tissue fluid, lymphocytes, bacteria, and cancer cells through lymphatic vessels and capillaries. The vessels converge in lymph nodes before draining into the subclavian veins. Primary lymphatic organs are the red bone marrow and thymus, which produce lymphocytes. Secondary lymphatic organs include lymph nodes, tonsils, spleen, Peyer's patches, and appendix, which filter lymph and mount immune responses.
Lymphatic system
The lymphatic system is part of the circulatory system and immune system. It is composed of lymph capillaries that branch throughout the body and collect lymph fluid high in white blood cells. The lymph vessels drain the lymph fluid into the lymph nodes where the fluid is filtered before emptying into the bloodstream via two main lymphatic ducts. The lymphatic system also includes the thymus, spleen, bone marrow, and collections of lymphatic tissue in the respiratory and digestive tracts that help fight infection and produce immune cells.
lymphoid tissues l o
This document outlines a lecture on lymphoid tissues and lymphoid organs. It discusses the different types of lymphoid tissue, including diffuse lymphoid tissue found throughout the body, and nodular lymphoid organs like lymph nodules, lymph nodes, the thymus, tonsils, and spleen. For each organ, it describes the structure, cellular composition, location in the body, and basic functions. The goal is for students to understand the types, structures, and roles of the major lymphoid tissues and organs in the immune system.
Histology of lymphatic system
Hello friends..you can use these notes for your convenience as they are taken from many other standard books.. Thank you
Spleen and lymph nodes
Lymph nodes are bean-shaped organs found clustered along lymph channels throughout the body, except in the placenta and brain. There are over 800 lymph nodes total, with around 300 located in the head and neck. The secondary lymphatic organs, which include the spleen, lymph nodes, tonsils, and appendix, are where lymphocytes encounter antigens and proliferate. Disorders of the lymphatic system can spread easily throughout the body via its vessels and are often devastating due to this widespread nature. The spleen acts as a blood filter, detecting foreign antigens and activating immune responses, and it can store and remove old blood cells.
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histology of lymphatic system
This document summarizes the histology of the lymphatic system. It describes the main lymphoid organs as lymph nodes, spleen, thymus, and tonsils. Lymph nodes contain an outer cortex with lymphoid nodules and germinal centers, and an inner medulla with medullary cords and sinuses. The spleen has a capsule dividing it into white pulp with lymphoid nodules and red pulp with splenic cords and sinusoids. The thymus has a dark staining cortex containing immature lymphocytes and a light staining medulla with thymic corpuscles. Tonsils consist of lymphoid nodules in crypts, covered by stratified squ
Lymph node
Lymph nodes are oval structures that filter lymph and help the immune system fight infections. They contain a capsule that admits lymph through afferent vessels and releases it through efferent vessels. The lymph circulates through sinuses in the cortex and medulla before exiting. Lymph nodes vary in size and receive blood only at the hilum. They contain lymphatic tissue to combat pathogens by generating antibodies and immune cells that travel via efferent lymph vessels.
Lymphatic system
The lymphatic system consists of lymph vessels, lymph nodes, and lymphoid tissues that work together to drain excess fluid from tissues, absorb and transport fatty acids from the gut, and help fight infection. Lymph is formed when interstitial fluid drains into initial lymphatic vessels and circulates through a network of vessels, nodes, ducts, and eventually returns to the bloodstream. Lymph nodes filter lymph as it circulates and contain immune cells that help fight pathogens. The major lymphatic ducts are the thoracic duct and right lymphatic duct which drain lymph into the bloodstream in the neck.
ANATOMY OF THE LYMPHATIC SYSTEM
The lymphatic system consists of lymph, lymphatic vessels, lymphatic tissue, and lymphatic organs. Lymph is a clear fluid that transports tissue fluid, lymphocytes, bacteria, and cancer cells through lymphatic vessels and capillaries. The vessels converge in lymph nodes before draining into the subclavian veins. Primary lymphatic organs are the red bone marrow and thymus, which produce lymphocytes. Secondary lymphatic organs include lymph nodes, tonsils, spleen, Peyer's patches, and appendix, which filter lymph and mount immune responses.
Lymphatic system
The lymphatic system is part of the circulatory system and immune system. It is composed of lymph capillaries that branch throughout the body and collect lymph fluid high in white blood cells. The lymph vessels drain the lymph fluid into the lymph nodes where the fluid is filtered before emptying into the bloodstream via two main lymphatic ducts. The lymphatic system also includes the thymus, spleen, bone marrow, and collections of lymphatic tissue in the respiratory and digestive tracts that help fight infection and produce immune cells.
lymphoid tissues l o
This document outlines a lecture on lymphoid tissues and lymphoid organs. It discusses the different types of lymphoid tissue, including diffuse lymphoid tissue found throughout the body, and nodular lymphoid organs like lymph nodules, lymph nodes, the thymus, tonsils, and spleen. For each organ, it describes the structure, cellular composition, location in the body, and basic functions. The goal is for students to understand the types, structures, and roles of the major lymphoid tissues and organs in the immune system.
Histology of lymphatic system
Hello friends..you can use these notes for your convenience as they are taken from many other standard books.. Thank you
Spleen and lymph nodes
Lymph nodes are bean-shaped organs found clustered along lymph channels throughout the body, except in the placenta and brain. There are over 800 lymph nodes total, with around 300 located in the head and neck. The secondary lymphatic organs, which include the spleen, lymph nodes, tonsils, and appendix, are where lymphocytes encounter antigens and proliferate. Disorders of the lymphatic system can spread easily throughout the body via its vessels and are often devastating due to this widespread nature. The spleen acts as a blood filter, detecting foreign antigens and activating immune responses, and it can store and remove old blood cells.
Lymphoid tissue
The lymphatic system consists of lymph, lymph nodes, lymph vessels, the spleen, thymus, tonsils, bone marrow and skin-associated lymphoid tissues. The main cells of the lymphatic system are lymphocytes such as B cells, T cells, natural killer cells, and supporting cells that interact with and present antigens to lymphocytes. The lymphatic system protects the body from foreign materials, assists in fluid circulation, and transports dietary fats. The thymus gland aids in the maturation of T cells while the spleen filters blood and mounts an immune response to antigens. Lymph nodes are located around arteries and veins and filter lymph fluid draining tissues.
LYMPH NODES
The lymph node is a small bean-shaped object which factors in the body's immune system. Lymph nodes clean out substances that travel through the lymphatic fluid, and they contain white blood cells that are the body's defense when fighting off ailments. There are many lymph nodes found throughout the body.
Lecture12 lymphatic system
The document summarizes the microscopic structure and function of lymphatic organs including the thymus, lymph nodes, spleen, and tonsils. It describes the distribution of T and B lymphocytes in these organs. The thymus differentiates T lymphocytes. Lymph nodes contain B and T cell regions and filter lymph. The spleen contains white pulp with B cell follicles and red pulp for filtering blood. Tonsils contain lymphoid tissue in the pharyngeal mucosa and tonsillar crypts.
Lymph Nodes
The lymphatic system has three functions:
Fluid recovery.
Immunity
Lipid absorption
The lymphatic vessels of the small intestine receive the special designation of lacteals or chyliferous vessels.
The components of the lymphatic system are :-
lymph, the recovered fluid;
Lymphatic vessels, which transport the lymph;
Lymphatic tissue, composed of aggregates of lymphocytes and macrophages that populate many organs of the body; and
Lymphatic organs, in which these cells are especially concentrated and which are set off from surrounding organs by connective tissue capsules.
Lymphatic system- Lymph nodes and Spleen
This document discusses the microanatomy of lymphoid organs and immune cells. It describes the structure and function of lymphocytes, macrophages, endothelial cells, lymph nodes, spleen, and lymphatic and circulatory systems. Key cells and tissues discussed include B cells, T cells, macrophages, lymph nodes, spleen, lymphatic vessels, sinusoids, and white and red pulp. The roles of these components in immune function, antigen presentation, and filtration are summarized.
Anatomy & physiology of lymphatic system
The document summarizes the anatomy and physiology of the lymphatic system and discusses pathological features of inflammation and infection. It describes the components of the lymphatic system including lymph, lymph vessels, lymph nodes, and lymphatic tissues. It then discusses the functions of the lymphatic system and pathological conditions like Hodgkin's lymphoma, non-Hodgkin's lymphoma, and Burkitt's lymphoma.
Lymphatic system: Anatomy and Physiology
The lymphatic system is part of the immune system. It also maintains fluid balance and plays a role in absorbing fats and fat-soluble nutrients.
The lymphatic or lymph system involves an extensive network of vessels that passes through almost all our tissues to allow for the movement of a fluid called lymph. Lymph circulates through the body in a similar way to blood.
There are about 600 lymph nodes in the body. These nodes swell in response to infection, due to a build-up of lymph fluid, bacteria, or other organisms and immune system cells.
A person with a throat infection, for example, may feel that their "glands" are swollen. Swollen glands can be felt especially under the jaw, in the armpits, or in the groin area. These are, in fact, not glands but lymph nodes.
Lymph and lymphatic system
The lymphatic system consists of lymph, lymph vessels, lymph nodes, and lymphocyte-containing tissues. It collects fluid that leaks from blood vessels, known as lymph, and returns it to the circulatory system. The lymph flows through a network of thin-walled lymphatic vessels and passes through lymph nodes, which contain immune cells. Any foreign substances are filtered out before the lymph rejoins the bloodstream in larger veins in the neck.
Lymphatic system ppt
The lymphatic system is a drainage system that works alongside the venous system to remove tissue fluid from interstitial spaces. Lymph capillaries absorb excess tissue fluid and transport it through lymphatic vessels to lymph nodes, where it is filtered. The filtered lymph then drains into either the thoracic duct or right lymphatic duct and returns to the bloodstream. The lymphatic system removes larger particles from tissues and transports mature lymphocytes throughout the body. Key components include lymph vessels, central lymphoid tissues like bone marrow and thymus, peripheral lymphoid organs like lymph nodes and spleen, and circulating lymphocytes in the bloodstream.
Anatomy and physiology of
The lymphatic system helps fight infection and disease. It is composed of lymph vessels that carry lymph fluid containing white blood cells. Lymph fluid is similar to plasma but contains larger particles like bacteria and damaged cells. Lymph vessels connect to lymph nodes which filter the lymph and contain lymphocytes that fight infection. The largest lymph vessels are the thoracic duct and right lymphatic duct which drain lymph into the bloodstream. Disorders of the lymphatic system include lymphomas, lymphadenitis, and lymphedema.
Lymphatic System
The lymphoid system circulates lymph through vessels and tissues like lymph nodes. It produces lymphocytes in primary organs like the bone marrow, thymus, and spleen. The thymus matures T cells in its cortex and medulla. Bone marrow generates blood cells and prevents backflow of lymph. Secondary organs like lymph nodes initiate immune responses when antigens are presented.
Histology Anatomy of Cardiovascular System
This document provides an overview of the cardiovascular system and its histology. It begins with objectives of describing the histological features of the heart and blood vessels. It then introduces the cardiovascular system and describes the histological features of the heart's three layers - epicardium, myocardium, and endocardium. It also discusses the histology of blood vessels, including the layers of the vessel wall and differences between arteries, veins, and capillaries. Finally, it discusses some clinical applications regarding diseases that impact the cardiovascular system histology.
The lymphatic organs 2
The document discusses several lymphatic organs: the spleen, lymph nodes, and tonsils. The spleen is a single organ that filters blood and mounts immune responses. It has a thick capsule, trabeculae that divide it into compartments, white pulp containing follicles with central arterioles, and red pulp with splenic cords and sinusoids. Lymph nodes filter lymph and mount immunity. They have a thin capsule, trabeculae arising from the capsule, cortex and medulla regions. The tonsils include the palatine, lingual, and pharyngeal tonsils which are partially encapsulated lymphatic tissue located in the oral cavity and nasopharynx that protect from bacteria.
LYMPHATIC SYSTEM
The lymphatic system consists of lymph fluid, lymph vessels, and lymphatic organs that include lymph nodes and tonsils. Lymph is formed from interstitial fluid and contains water, proteins, cells, and other components. It flows from lymph capillaries through collecting vessels and trunks into the thoracic duct or right lymphatic duct and returns to the bloodstream. The lymphatic system helps remove excess fluid from tissues, transports fat and proteins, and plays a role in immune defense and absorption of nutrients. Disruptions in lymph flow can cause edema or other pathologies like lymphadenopathy or elephantiasis.
lymphoreticular system
The document discusses the anatomy and physiology of the lymphatic system. It describes the development of lymphatic vessels and organs like lymph nodes, spleen, thymus, and tonsils during fetal life. It also explains the structure and functions of these organs. The lymphatic system works with the immune system to produce and transport immune cells and lymph throughout the body. It helps maintain fluid balance and transports fat, proteins, and other molecules before returning to the bloodstream.
Urinary System Notes
The kidneys filter blood to produce urine and are located between vertebrae T12-L3. Each kidney contains an outer cortex where filtering occurs and an inner medulla composed of renal pyramids. Blood enters the kidneys through the renal artery and leaves through the renal vein, undergoing filtration in structures called nephrons. Urine flows from nephrons through collecting ducts into minor calyces, major calyces, the renal pelvis, ureters, bladder, and urethra to exit the body. The ureters are muscular tubes that carry urine from kidneys to bladder. The bladder is a muscular reservoir organ where urine is stored before exiting through the urethra.
Lymphatic system and Immunity
This PPT covers the concepts of Lymphatic system and Immunity. This includes functions of Lymphatic system, components of Lymphatic system, Lymphatic organs and tissues, formation and flow of lymph and composition of Lymph
Anatomy of lymph nodes and presence of lymph nodes
BASIC ANATOMY OF ALL LYMPH NODES DR AMEENA RAMZAN
NUMBER ,LOCATION AND PRESENCE OF LYMPH NODES AND ALL LYMPH NODES IN HUMAN BODY
NAMES OF DIFFERENT LYMPH NODES
Lymph node
This document provides an overview of lymph nodes, including their anatomy, components, and function. Lymph nodes are oval shaped structures distributed along lymphatic vessels that filter lymph and help trap foreign substances. They have an outer cortex containing lymphoid follicles and T cells, and an inner medulla containing sinuses that drain lymph. Lymph nodes play an important role in the immune system by filtering lymph and providing an environment for immune cells like lymphocytes and antigen-presenting cells to interact with antigens.
Human Anatomy and Physiology - Lymphatic system and body defenses
The lymphatic system helps maintain fluid balance, absorbs fats, and aids the immune system. It contains lymph vessels, lymph nodes, lymph, the spleen, thymus, and tonsils. Lymph nodes filter lymph and add infection-fighting lymphocytes. Together with nonspecific defenses like skin and inflammatory response, and specific defenses like antibodies and lymphocytes, the immune system protects the body from pathogens. Disorders can cause allergic reactions, immunodeficiencies, or autoimmune diseases where the immune system attacks the body's own tissues. The lymphatic system develops after birth as the baby gains its own active immunity.
Histology of lymph node(lymph node histology)
The document summarizes the histology of three lymphoid organs - lymph node, spleen, and thymus. It describes that lymph nodes have an outer cortex containing lymphatic nodules and inner medulla containing medullary cords. The spleen contains white pulp with lymphatic nodules and germinal centers, and red pulp with venous sinuses and splenic cords. The thymus has lobules consisting of a dense cortex and inner medulla containing thymic corpuscles.
Structure and function of Spleen
The spleen is a wedge-shaped lymphatic organ located in the left upper abdomen. It filters blood and removes old red blood cells, damaged cells, and infectious agents. The spleen contains red pulp with blood sinusoids and cords, and white pulp with lymphoid follicles and periarteriolar sheaths. It develops from the dorsal mesogastrium and plays important roles in immunity and blood filtration.
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Lymphoid tissue
The lymphatic system consists of lymph, lymph nodes, lymph vessels, the spleen, thymus, tonsils, bone marrow and skin-associated lymphoid tissues. The main cells of the lymphatic system are lymphocytes such as B cells, T cells, natural killer cells, and supporting cells that interact with and present antigens to lymphocytes. The lymphatic system protects the body from foreign materials, assists in fluid circulation, and transports dietary fats. The thymus gland aids in the maturation of T cells while the spleen filters blood and mounts an immune response to antigens. Lymph nodes are located around arteries and veins and filter lymph fluid draining tissues.
LYMPH NODES
The lymph node is a small bean-shaped object which factors in the body's immune system. Lymph nodes clean out substances that travel through the lymphatic fluid, and they contain white blood cells that are the body's defense when fighting off ailments. There are many lymph nodes found throughout the body.
Lecture12 lymphatic system
The document summarizes the microscopic structure and function of lymphatic organs including the thymus, lymph nodes, spleen, and tonsils. It describes the distribution of T and B lymphocytes in these organs. The thymus differentiates T lymphocytes. Lymph nodes contain B and T cell regions and filter lymph. The spleen contains white pulp with B cell follicles and red pulp for filtering blood. Tonsils contain lymphoid tissue in the pharyngeal mucosa and tonsillar crypts.
Lymph Nodes
The lymphatic system has three functions:
Fluid recovery.
Immunity
Lipid absorption
The lymphatic vessels of the small intestine receive the special designation of lacteals or chyliferous vessels.
The components of the lymphatic system are :-
lymph, the recovered fluid;
Lymphatic vessels, which transport the lymph;
Lymphatic tissue, composed of aggregates of lymphocytes and macrophages that populate many organs of the body; and
Lymphatic organs, in which these cells are especially concentrated and which are set off from surrounding organs by connective tissue capsules.
Lymphatic system- Lymph nodes and Spleen
This document discusses the microanatomy of lymphoid organs and immune cells. It describes the structure and function of lymphocytes, macrophages, endothelial cells, lymph nodes, spleen, and lymphatic and circulatory systems. Key cells and tissues discussed include B cells, T cells, macrophages, lymph nodes, spleen, lymphatic vessels, sinusoids, and white and red pulp. The roles of these components in immune function, antigen presentation, and filtration are summarized.
Anatomy & physiology of lymphatic system
The document summarizes the anatomy and physiology of the lymphatic system and discusses pathological features of inflammation and infection. It describes the components of the lymphatic system including lymph, lymph vessels, lymph nodes, and lymphatic tissues. It then discusses the functions of the lymphatic system and pathological conditions like Hodgkin's lymphoma, non-Hodgkin's lymphoma, and Burkitt's lymphoma.
Lymphatic system: Anatomy and Physiology
The lymphatic system is part of the immune system. It also maintains fluid balance and plays a role in absorbing fats and fat-soluble nutrients.
The lymphatic or lymph system involves an extensive network of vessels that passes through almost all our tissues to allow for the movement of a fluid called lymph. Lymph circulates through the body in a similar way to blood.
There are about 600 lymph nodes in the body. These nodes swell in response to infection, due to a build-up of lymph fluid, bacteria, or other organisms and immune system cells.
A person with a throat infection, for example, may feel that their "glands" are swollen. Swollen glands can be felt especially under the jaw, in the armpits, or in the groin area. These are, in fact, not glands but lymph nodes.
Lymph and lymphatic system
The lymphatic system consists of lymph, lymph vessels, lymph nodes, and lymphocyte-containing tissues. It collects fluid that leaks from blood vessels, known as lymph, and returns it to the circulatory system. The lymph flows through a network of thin-walled lymphatic vessels and passes through lymph nodes, which contain immune cells. Any foreign substances are filtered out before the lymph rejoins the bloodstream in larger veins in the neck.
Lymphatic system ppt
The lymphatic system is a drainage system that works alongside the venous system to remove tissue fluid from interstitial spaces. Lymph capillaries absorb excess tissue fluid and transport it through lymphatic vessels to lymph nodes, where it is filtered. The filtered lymph then drains into either the thoracic duct or right lymphatic duct and returns to the bloodstream. The lymphatic system removes larger particles from tissues and transports mature lymphocytes throughout the body. Key components include lymph vessels, central lymphoid tissues like bone marrow and thymus, peripheral lymphoid organs like lymph nodes and spleen, and circulating lymphocytes in the bloodstream.
Anatomy and physiology of
The lymphatic system helps fight infection and disease. It is composed of lymph vessels that carry lymph fluid containing white blood cells. Lymph fluid is similar to plasma but contains larger particles like bacteria and damaged cells. Lymph vessels connect to lymph nodes which filter the lymph and contain lymphocytes that fight infection. The largest lymph vessels are the thoracic duct and right lymphatic duct which drain lymph into the bloodstream. Disorders of the lymphatic system include lymphomas, lymphadenitis, and lymphedema.
Lymphatic System
The lymphoid system circulates lymph through vessels and tissues like lymph nodes. It produces lymphocytes in primary organs like the bone marrow, thymus, and spleen. The thymus matures T cells in its cortex and medulla. Bone marrow generates blood cells and prevents backflow of lymph. Secondary organs like lymph nodes initiate immune responses when antigens are presented.
Histology Anatomy of Cardiovascular System
This document provides an overview of the cardiovascular system and its histology. It begins with objectives of describing the histological features of the heart and blood vessels. It then introduces the cardiovascular system and describes the histological features of the heart's three layers - epicardium, myocardium, and endocardium. It also discusses the histology of blood vessels, including the layers of the vessel wall and differences between arteries, veins, and capillaries. Finally, it discusses some clinical applications regarding diseases that impact the cardiovascular system histology.
The lymphatic organs 2
The document discusses several lymphatic organs: the spleen, lymph nodes, and tonsils. The spleen is a single organ that filters blood and mounts immune responses. It has a thick capsule, trabeculae that divide it into compartments, white pulp containing follicles with central arterioles, and red pulp with splenic cords and sinusoids. Lymph nodes filter lymph and mount immunity. They have a thin capsule, trabeculae arising from the capsule, cortex and medulla regions. The tonsils include the palatine, lingual, and pharyngeal tonsils which are partially encapsulated lymphatic tissue located in the oral cavity and nasopharynx that protect from bacteria.
LYMPHATIC SYSTEM
The lymphatic system consists of lymph fluid, lymph vessels, and lymphatic organs that include lymph nodes and tonsils. Lymph is formed from interstitial fluid and contains water, proteins, cells, and other components. It flows from lymph capillaries through collecting vessels and trunks into the thoracic duct or right lymphatic duct and returns to the bloodstream. The lymphatic system helps remove excess fluid from tissues, transports fat and proteins, and plays a role in immune defense and absorption of nutrients. Disruptions in lymph flow can cause edema or other pathologies like lymphadenopathy or elephantiasis.
lymphoreticular system
The document discusses the anatomy and physiology of the lymphatic system. It describes the development of lymphatic vessels and organs like lymph nodes, spleen, thymus, and tonsils during fetal life. It also explains the structure and functions of these organs. The lymphatic system works with the immune system to produce and transport immune cells and lymph throughout the body. It helps maintain fluid balance and transports fat, proteins, and other molecules before returning to the bloodstream.
Urinary System Notes
The kidneys filter blood to produce urine and are located between vertebrae T12-L3. Each kidney contains an outer cortex where filtering occurs and an inner medulla composed of renal pyramids. Blood enters the kidneys through the renal artery and leaves through the renal vein, undergoing filtration in structures called nephrons. Urine flows from nephrons through collecting ducts into minor calyces, major calyces, the renal pelvis, ureters, bladder, and urethra to exit the body. The ureters are muscular tubes that carry urine from kidneys to bladder. The bladder is a muscular reservoir organ where urine is stored before exiting through the urethra.
Lymphatic system and Immunity
This PPT covers the concepts of Lymphatic system and Immunity. This includes functions of Lymphatic system, components of Lymphatic system, Lymphatic organs and tissues, formation and flow of lymph and composition of Lymph
Anatomy of lymph nodes and presence of lymph nodes
BASIC ANATOMY OF ALL LYMPH NODES DR AMEENA RAMZAN
NUMBER ,LOCATION AND PRESENCE OF LYMPH NODES AND ALL LYMPH NODES IN HUMAN BODY
NAMES OF DIFFERENT LYMPH NODES
Lymph node
This document provides an overview of lymph nodes, including their anatomy, components, and function. Lymph nodes are oval shaped structures distributed along lymphatic vessels that filter lymph and help trap foreign substances. They have an outer cortex containing lymphoid follicles and T cells, and an inner medulla containing sinuses that drain lymph. Lymph nodes play an important role in the immune system by filtering lymph and providing an environment for immune cells like lymphocytes and antigen-presenting cells to interact with antigens.
Human Anatomy and Physiology - Lymphatic system and body defenses
The lymphatic system helps maintain fluid balance, absorbs fats, and aids the immune system. It contains lymph vessels, lymph nodes, lymph, the spleen, thymus, and tonsils. Lymph nodes filter lymph and add infection-fighting lymphocytes. Together with nonspecific defenses like skin and inflammatory response, and specific defenses like antibodies and lymphocytes, the immune system protects the body from pathogens. Disorders can cause allergic reactions, immunodeficiencies, or autoimmune diseases where the immune system attacks the body's own tissues. The lymphatic system develops after birth as the baby gains its own active immunity.
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Anatomy of lymph nodes and presence of lymph nodes
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Human Anatomy and Physiology - Lymphatic system and body defenses
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Histology of lymph node(lymph node histology)
The document summarizes the histology of three lymphoid organs - lymph node, spleen, and thymus. It describes that lymph nodes have an outer cortex containing lymphatic nodules and inner medulla containing medullary cords. The spleen contains white pulp with lymphatic nodules and germinal centers, and red pulp with venous sinuses and splenic cords. The thymus has lobules consisting of a dense cortex and inner medulla containing thymic corpuscles.
Structure and function of Spleen
The spleen is a wedge-shaped lymphatic organ located in the left upper abdomen. It filters blood and removes old red blood cells, damaged cells, and infectious agents. The spleen contains red pulp with blood sinusoids and cords, and white pulp with lymphoid follicles and periarteriolar sheaths. It develops from the dorsal mesogastrium and plays important roles in immunity and blood filtration.
Lymphatic organs of body
Lymphatic organs of body
• Lymphoid organs are the organs, in which lymphocytes can differentiate and proliferate.
• They are part of lymphatic system.
• The lymphatic system is part of circulatory system and a vital part of the immune system, comprising a network of lymphatic vessels that carry a clear fluid called lymph (from Latin, lympha meaning "water" directionally towards the heart.
• Unlike the cardiovascular system, the lymphatic system is not a closed system.
• HISTORY –
• Hippocrates and Aristotle described lymph as white fluid.
• Gasparo aselli an Italian anatomist discovered lymphatic vessels in 1622.
• Van hook in 1652 demonstrated the presence of cisterna chyli and thoracic duct in humans.
• William hunter in the late 18th century was the first to describe the functions of lymphatic system.
• Olof Rudbeck of Swedish university described that lymphatic system constitute a circulatory system separate from blood circulation and this fact was accepted by Royal society of London.
Lymph node and its level/certified fixed orthodontic courses by Indian dental...
Lymph node and its level/certified fixed orthodontic courses by Indian dental...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.comLYMPHATIC SYSTEM
THE TISSUES AND ORGANS THAT PRODUCE, STORE, AND CARYY WHITE BLOOD CELLS THAT FIGHT INFECTIONS AND OTHER DISEASES.
The lymphatic organs
The lymphatic organs include lymph nodes, tonsils, and the spleen.
Lymph nodes are kidney-shaped and filter lymph. They have an outer cortex containing lymph follicles and sinuses, and an inner medulla containing medullary cords and sinuses. The spleen filters blood and produces blood cells. It has trabeculae dividing it into compartments containing white pulp with follicles and red pulp with cords and sinuses. Tonsils contain lymphoid tissue and are located in the palate, base of the tongue, and nasopharynx to protect the respiratory and digestive systems.
Lymphatic system and immunity
A good read for undergraduate students in Pharmacy studying at the University of Mumbai. I will highly recommend Principles of Anatomy and Physiology by Tortora et al. All copyright to the original authors and publishers.
~Thymus.&.Tonsils.Comprehensive.Histology.Jun.2022
1) The thymus is a bilobed organ in the anterior mediastinum that plays a key role in T cell maturation. It has an outer cortex and inner medulla.
2) During development it arises from endoderm of the 3rd and 4th pharyngeal pouches. The thymic lobes are divided into lobules surrounded by a capsule.
3) Histologically it contains thymic epithelial cells that form a network, Hassall's corpuscles in the medulla, and developing thymocytes in the cortex.
4) The thymus involutes with age, developing cysts and adipose tissue, but can have residual islands of epithelium and lymphocytes into adulthood.
Thymus.2019
The thymus is a primary lymphoid organ located in the superior mediastinum. It plays a key role in T cell development and maturation. The thymus has an outer capsule and is divided into lobules containing cortex and medulla regions. The cortex contains densely packed developing T cells and epithelioreticular cells. The medulla is less cellular and contains Hassall's corpuscles. Developing lymphocytes interact with epithelioreticular cells, which provide structural support and signals to guide T cell maturation.
lymphatic system system, general anatomy.pptx
The lymphatic system consists of lymph, lymph vessels, lymph nodes, lymph organs such as the spleen and thymus, and diffuse lymphoid tissues. It works to drain excess tissue fluid, absorb fat in the intestines, and help the immune system. The lymph vessels collect fluid from tissues and lymph nodes filter out debris. The spleen, thymus, tonsils, and other lymphoid tissues help the immune response and blood cell production.
Spleen (1).pptx
The spleen is the largest lymphoid organ connected to the blood vascular system. It acts as a blood filter, playing a role in the immune response. Microscopically, it contains a fibrous capsule and trabeculae that divide the spleen into red pulp and white pulp. The red pulp contains blood sinusoids and filters aged red blood cells. The white pulp contains lymphocyte follicles that surround arterioles and produce antibodies. Blood enters via the splenic artery and drains into the portal vein via the splenic vein.
lymphaticsystem-181202101207.pdf
The lymphatic system consists of lymph vessels, lymph nodes, and lymphoid tissues that work together to drain excess fluid from tissues, absorb and transport fatty acids from the gut, and help fight infection and disease. Lymph is formed from interstitial fluid that has leaked from blood vessels and is transported through unidirectional lymph vessels to lymph nodes where it is filtered and returned to the bloodstream to maintain fluid balance. The major components of the lymphatic system include lymph, lymph vessels, lymph nodes, and lymphoid organs that circulate lymph in a stepwise fashion throughout the body.
Epithelium
Epithelium is a layered tissue that covers external and internal surfaces of the body. It was originally termed for the cellular covering of the nipple, as "nipple" is also called "thelium". Epithelium is predominantly cellular with numerous junctions and little intercellular material. It has several functions including protection, secretion, absorption and sensation. Epithelium is classified as surface epithelium or glandular epithelium, with surface epithelium further divided into classical and non-classical types. Simple squamous epithelium forms a thin layer one cell thick for functions like diffusion and filtration. Simple cuboidal epithelium appears as cells of equal width and height and includes renal tubules and the ovary
Lymphatic system[1]
The lymphatic system consists of lymphatic vessels, lymph nodes, and lymphoid organs that work together to drain fluid from tissues, absorb fats, and fight infection. Lymphatic vessels carry lymph fluid and drain into lymph nodes which filter the lymph before returning it to the bloodstream. Major lymphoid organs include the spleen, thymus and tonsils, which help produce immune cells and filter blood and lymph respectively. The lymphatic system is essential for fluid balance, fat absorption, and immune defense.
Levels of Lymph Nodes
Occipital (2-4)
Superior nuchal line between sternocleidomastoid and trapezius
Occipital part of scalp
Superficial cervical lymph nodes
Accessary lymph nodes
Mastoid (1-3)
Superficial to sternocleidomastoid insertion
Posterior parietal scalp
Skin of ear, posterior external acoustic meatus
Superior deep cervical nodes Accessary lymph nodes
Preauricular (2-3)
Anterior to ear over parotid fascia
Drains areas supplied by superficial temporal artery
Anterior parietal scalp
Anterior surface of ear
Superior deep cervical lymph nodes
Parotid (up to 10 or more)
About parotid gland and under parotid fascia
Deep to parotid gland
External acoustic meatus
Skin of frontal and temporal regions
Eyelids, tympanic cavity
Cheek, nose (posterior palate)
Superior deep cervical lymph nodes
Facial
Superficial(up to 12)
Maxillary
Buccal
Mandibular
Distributed along course of facial artery and vein
Skin and mucous membranes of eyelids, nose, cheek
Submandibular nodes
Deep
Distributed along course of maxillary artery lateral to lateral pterygoid muscle
Temporal and infratemporal fossa
Nasal pharynx
Superior deep cervical lymph nodesSuperficial
Anterior jugular vein between superficial cervical fascia and infrahyoid fascia
Skin, muscles, and viscera of infrahyoid region of neck
Superior deep cervical lymph nodes
Deep
Between viscera of neck and investing layer of deep cervical fascia
Adjoining parts of trachea, larynx, thyroid gland
Superior deep cervical lymph nodes
Anterior cervical/Superficial
Submental (2-3)
Submental triangle
Chin
Medial part of lower lip
Lower incisor teeth and gingiva
Tip of tongue
Cheeks
Submandibular lymph node to jugulo-omohyoid lymph node and superior deep cervical lymph nodes
Developmental disturbance of Oral Lymphoid tissue
1. The document discusses developmental disturbances of oral lymphoid tissues, including reactive lymphoid aggregates in locations such as the lingual tonsils and Waldeyer's ring.
2. It describes lymphoepithelial cysts, which are developmental cysts in the neck that may occur orally as well. Microscopically, they are lined by stratified squamous epithelium and contain lymphoid tissue.
3. Angiolymphoid hyperplasia with eosinophilia is discussed, which presents as oral nodules and peripheral eosinophilia in some cases. Histologically, it
Histology of normal liver
The liver is the second largest organ and largest gland in the body. It has a dual blood supply and is divided into lobules that contain hepatocytes, sinusoids, and a central vein. Blood flows into lobules through the portal vein and hepatic artery and out through hepatic veins. Hepatocytes are arranged in plates separated by sinusoids and produce bile that flows into canaliculi and out of the liver. The liver has regenerative abilities and its segmentation allows for resection of parts without damaging remaining tissue.
ANATOMY & PHYSIOLOGY OF THE LYMPHATIC SYSTEM
The lymphatic system consists of lymph, lymph vessels, lymph nodes, and lymph organs such as the spleen and thymus. It works to drain fluid from tissues, absorb fats and nutrients, and help the immune system fight pathogens. Lymph passes through vessels and lymph nodes before returning to the bloodstream. The spleen filters the blood and removes old red blood cells, while the thymus gland helps develop immune cells. Disorders can include lymphangitis, lymphadenitis, and lymphomas.
Unit 4 lymphatic system nrs 237
The lymphatic system returns interstitial fluid and leaked plasma proteins back to the blood. It consists of a network of lymphatic vessels and lymphoid tissues scattered throughout the body. Lymph is composed of interstitial fluid that has entered lymphatic capillaries from tissues. It flows from capillaries through collecting vessels and trunks before draining into the subclavian veins. The lymphatic system works with the immune system and contains lymphocytes that help fight pathogens and cancer cells. Primary lymphatic organs like the bone marrow and thymus gland produce lymphocytes while secondary organs like lymph nodes, spleen, tonsils, and Peyer's patches help the immune response.
SPLEEN.pptx
The spleen is a soft, freely movable organ located in the upper left quadrant of the abdominal cavity. It plays an important role in the immune system by filtering blood and removing old red blood cells and platelets. Histologically, the spleen contains a capsule and is divided into red pulp and white pulp. The red pulp contains blood-filled sinusoids that filter the blood, while the white pulp contains lymphoid nodules that help fight infections. Blood flows into the spleen via the splenic artery and drains into veins before exiting the organ.
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Academy of Oriental Medicine at Austin
Academy of Oriental Medicine at Austin
Academy of Oriental Medicine at Austin
About AOMA: The Academy of Oriental Medicine at Austin offers a masters-level graduate program in acupuncture and Oriental medicine, preparing its students for careers as skilled, professional practitioners. AOMA is known for its internationally recognized faculty, award-winning student clinical internship program, and herbal medicine program. Since its founding in 1993, AOMA has grown rapidly in size and reputation, drawing students from around the nation and faculty from around the world. AOMA also conducts more than 20,000 patient visits annually in its student and professional clinics. AOMA collaborates with Western healthcare institutions including the Seton Family of Hospitals, and gives back to the community through partnerships with nonprofit organizations and by providing free and reduced price treatments to people who cannot afford them. The Academy of Oriental Medicine at Austin is located at 2700 West Anderson Lane. AOMA also serves patients and retail customers at its south Austin location, 4701 West Gate Blvd. For more information see www.aoma.edu or call 512-492-303434.
Breast cancer: Post menopausal endocrine therapy
Breast cancer in postmenopausal women with hormone receptor-positive (HR+) status is a common and complex condition that necessitates a multifaceted approach to management. HR+ breast cancer means that the cancer cells grow in response to hormones such as estrogen and progesterone. This subtype is prevalent among postmenopausal women and typically exhibits a more indolent course compared to other forms of breast cancer, which allows for a variety of treatment options.
Diagnosis and Staging
The diagnosis of HR+ breast cancer begins with clinical evaluation, imaging, and biopsy. Imaging modalities such as mammography, ultrasound, and MRI help in assessing the extent of the disease. Histopathological examination and immunohistochemical staining of the biopsy sample confirm the diagnosis and hormone receptor status by identifying the presence of estrogen receptors (ER) and progesterone receptors (PR) on the tumor cells.
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Treatment Options
Endocrine Therapy
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Normal histology of lymphatic system
- 12. Hassall corpuscles: • Distinguishing feature of thymic medulla • Spherical or oval in shape • Their nuclei are flat and cytoplasm is markedly eosinophilic • They may become keratinized or calcified
- 14. H&E staining of section of a Spleen
- 15. White pulp and red pulp: • White pulp contains lymphoid aggregations, mostly lymphocytes, and macrophages • The lymphocytes are both T and B-cells. • Red pulp is vascular, and has parencyhma and lots of vascular sinuses and hence the name red pulp. • The damaged cells are phagocytosed by the numerous macrophages in the red pulp
- 19. This is an H&E stained section of a lymph node at low magnification. We can recognise the outer capsule, trabeculae, cortex and medulla, afferent lymphatic vessels, lymphoid follicles, medullary cords, the Hilium and efferent lymphatic vessels
- 23. • Respiratory epi: Pseudostratified columnar ciliated
- 24. • The mucosa of the digestive, respiratory and urinary tracts often contains small aggregations of lymphocytes (mostly T lymphos) called lymphoid follicles. These are called 'Mucosa associated lymphoid tissue' (MALT).